ONGC Helicopter Crash: Pawan Hans deployed a brand new Sikorsky S-76 chopper

Deadly Canadian Forces helicopter crash linked with software glitch, report shows

(4/11/1989) A 1964 Sikorsky helicopter suffers a rotor malfunction while lifting an air conditioning unit off the Bay View Terrace Condominiums in Milwaukee WI. Pilot Ben Moore sustained a cut to his leg and nose. The incident was recorded from two different vantage points.

Autonomous Sikorsky helicopters tested for use in fighting fires

Sikorsky- HH-3F “Pelican” (1967) | Coast Guard Aviation History